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Method and apparatus for selecting a transport format combination

A transport format combination and transport format technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problem of reducing channel performance and retransmission times.

Inactive Publication Date: 2012-03-07
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In HSPA+ and LTE, the same TFC selection is used (in particular, the same modulation and coding scheme (MCS )) may not be effective in overcoming degraded channel performance and reducing the number of retransmissions

Method used

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  • Method and apparatus for selecting a transport format combination
  • Method and apparatus for selecting a transport format combination
  • Method and apparatus for selecting a transport format combination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] 1. A method of selecting a TFC for wireless transmission of data in a wireless communication system.

[0056] 2. The method of embodiment 1, comprising the step of allocating radio resources and parameters for transmission.

[0057] 3. The method of embodiment 2, comprising the step of generating the allowed TFCS subset by restoring supported TFCs and eliminating unsupported TFCs based on allocated radio resources and parameters.

[0058] 4. The method of embodiment 3, wherein the attributes of the TF include MCS.

[0059] 5. The method of any one of embodiments 1-4, comprising the step of generating a MAC PDU by multiplexing at least one higher layer PDU within a maximum supported MAC PDU size.

[0060] 6. The method of embodiment 5, comprising the step of selecting a TFC for said MAC PDU from said allowed TFCS subset.

[0061] 7. The method of embodiment 6, comprising the step of padding the MAC PDU so that the MAC PDU fits the selected TFC.

[0062] 8. The method ...

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PUM

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Abstract

A method and apparatus for selecting a transport format combination (TFC) are disclosed. A TFC recovery and elimination unit generates an allowed transport format combination set (TFCS) subset by recovering supported TFCs and eliminating not supported TFCs based on allocated radio resources and parameters that are new. A multiplexing and transmission sequence number (TSN) setting unit generates amedium access control (MAC) protocol data unit (PDU) by multiplexing at least one higher layer PDU within a maximum supported MAC PDU size. A TFC selection and padding unit selects a TFC for the MAC PDU from the allowed TFCS subset and performs padding of the MAC PDU, if necessary, so that the MAC PDU fits into the selected TFC. For retransmission, a new allowed TFCS subset may be generated basedon new radio resources and parameters and the MAC PDU may be fragmented.

Description

technical field [0001] The present invention relates to wireless communication systems. More specifically, the present invention relates to a method and system for selecting a transport format combination (TFC). The present invention is applicable to any wireless system, including High Speed ​​Packet Access+ (HSPA+) in the third generation (3G) wireless communication system and Long Term Evolution (LTE) in the 3G wireless communication system. Background technique [0002] Currently, developers of 3G wireless communication systems are considering LTE of 3G systems to develop a new radio access network for an improved system with high capacity and better coverage providing high data rate, low latency and optimized packetization. In order to achieve these goals, instead of using Code Division Multiple Access (CDMA) currently used in 3G systems, Orthogonal Frequency Division Multiple Access (OFDMA) and Frequency Division Multiple Access (FDMA) are proposed as the downlink and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56
CPCH04W52/367H04L47/10H04W52/346H04W52/36H04W28/18H04W52/34
Inventor 王津史蒂芬E·泰利亚蒂·钱德拉张国栋
Owner INTERDIGITAL TECH CORP
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